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P0016 in 2003 Toyota Camry 2.4L
by mandkauto on Jul 26 2017, 4:13 PMI've been trying to figure out how to get rid of a P0016 in a Toyota Camry with a 2.4L engine. The car had a new head gasket and timing set installed a couple months ago and has come back with the check engine light. I went in with the scanner and commanded the VVT solenoid on and off and there was no change in the running of the engine, the resistance of the solenoid was in spec and it moved when power was applied but I went ahead and replaced it to see what would happen. After replacing, commanding the valve on would kill the engine, which is what I wanted to see. Took it out for a couple test drives, drove out well but eventually the code returned and commanding the new solenoid had no effect on the engine. At this point I'm fairly certain it's not the solenoid but bunk parts do happen so I got one from a different vendor. This second new solenoid worked out for much longer but eventually the same thing happened. I'm 99% certain the timing chain isn't off, I installed it and triple checked. It could be in the hydraulic intake cam sprocket or the ECM, Both are expensive and tricky to diagnose. At this point the car has become a headache for the owner and myself, I'm running out of ideas and he's running out of patience.
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